Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7743523 | Arrangement for determining thicknesses and thickness variations The device claimed by the invention is characterized essentially in that during the transport of a flat object, in particular, a banknote, through guide elements the deflection of one or two second guide elements from a first guide element is detected via an electri... | 06/29/2010 |
| 7357077 | Data carrier, method for the production thereof and gravure printing plate The invention relates to a data carrier having a security element that is at least visually testable and has an embossing in at least a partial area, the embossing being a halftone blind embossing executed by inkless intaglio printing, and to a method for producing ... | 04/15/2008 |
| 7131211 | Method and apparatus for measurement of thickness and warpage of substrates An apparatus comprises one or more pairs of mutually coaxial and opposing linear measuring devices including movable, biased fingers for simultaneously determining the thickness and warpage of a substrate such as a circuit board passing between the fingers. Each mea... | 11/07/2006 |
| 7103206 | Method and apparatus for detecting doubled bills in a currency handling device A doubles detection system for detecting doubled documents. The system comprises one or more light sources disposed on a first side of a test document and one or more reflected light sensors disposed along the first side of the test document. The reflected light sen... | 09/05/2006 |
| 7032320 | Measuring apparatus in a paper machine A measuring apparatus includes at least one sensor which is provided on a measuring frame, which can be positioned opposite moving clothing or a device. The devices being, for example, a roll, of a machine for producing and/or treating a material web, in particular ... | 04/25/2006 |
| 7024273 | Probe driving mechanism for displacement measuring apparatuses A probe driving mechanism for displacement measuring apparatuses, capable of carrying out a stable, constant speed probe feeding operation without additionally providing a motor rotation detecting rotary encoder and a tachometer generator. When an output from a scal... | 04/04/2006 |
| 7017275 | Portable coordinate measurement machine with improved handle assembly A portable coordinate measurement machine comprises an articulated arm having jointed arm segments. The arm includes a probe at one end thereof. The probe also includes improved switches and a measurement indicator light. ... | 03/28/2006 |
| RE39037 | Thickness detecting caliper for sheet material having elastic arms with printed coils A pair of elastic strips are provided in order to hold sheet material to be measured in thickness. Each of the elastic strips includes of one or more elastic films. Ends of the elastic strips are supported by support portions, and the other ends of the elastic strip... | 03/28/2006 |
| 6993850 | Continuous recording of thickness, using a measuring roller with a bath-shaped guide shoe, articulated in parallel (long timber) The invention relates to a measuring device, which allows the thickness of an elongated, panel-type workpiece, lying on a reference plane and traveling along the reference plane, to be continuously recorded. The measuring device is provided with a guide shoe, which ... | 02/07/2006 |
| 6647636 | Method for measuring road surface longitudinal profile A measurement block 10 which moves longitudinally on a road surface includes disk-shaped first, second, and third rollers 11, 12, and 13 having the same outer diameter with a predetermined spacing set therebetween, a first coupling rod 14 which is mounted... | 11/18/2003 |
| 6588118 | Non-contact sheet sensing system and related method A non-contact system for sensing a property of a passing web of material includes first and second sensors positioned on opposite sides of the web. The opposing sensors are repelled from the web and each other by gas bearings formed between the sensors an... | 07/08/2003 |
| 6289599 | Apparatus for measuring the thickness of sliver bundle formed of a plurality of side-by-side running slivers An apparatus for measuring the thickness of a plurality of side-by-side running slivers includes a supporting surface guiding the side-by-side running slivers thereon in a single plane; a holding member; and a plurality of sensor elements movably secured ... | 09/18/2001 |
| 6175235 | Thickness detecting caliper for sheet material having elastic arms with printed coils A pair of elastic strips are provided in order to hold sheet material to be measured in thickness. Each of the elastic strips includes of one or more elastic films. Ends of the elastic strips are supported by support portions, and the other ends of the el... | 01/16/2001 |
| 6145211 | Contacting thickness gauge for moving sheet material A caliper gauge for moving sheet material such as paper which measures the thickness of the paper accommodates bumps or holes in the paper by providing at least one side of the caliper gauge with a long continuous smooth arm which because of its mounting ... | 11/14/2000 |
| 6141883 | Apparatus for detecting the thickness of documents A thickness detector is provided for detecting the thickness of envelopes containing documents. The thickness detector detects the thickness of the envelopes at a plurality of points along the length of the envelopes as the envelopes are conveyed along a ... | 11/07/2000 |
| 5996872 | Edge position sensor with integral thickness gauge A system for determining the edge of a continuous web and which compensates for non-uniformity in dielectric response, including thickness is disclosed. The invention comprises first electrode for outputting a signal corresponding to the edge position of ... | 12/07/1999 |
| 5713136 | Object measuring apparatus An object measuring apparatus for measuring the dimensions of an object, and controlling the pushing pressure of a probe that makes contact with the measured object. A table is movably mounted on a base member, a drive unit includes armature coils on the ... | 02/03/1998 |
| 5610329 | Low-cost runout sensor with high frequency response and negligible stiction in the direction of travel An apparatus which uses a sensing device for measuring gauges of elastomeric or rigid articles, or runout of elastomeric articles, has a pivoting arm which holds a means for creating a signal, and is movable relative to the object being measured. The mean... | 03/11/1997 |
| 5575078 | Zero load thickness caliper A caliper or measurement apparatus for compressible sheet material includes first and second opposed contact faces which move relative to each other. A load cell in one face detects the load exerted there against, while a position indicator indicates the ... | 11/19/1996 |
| 5561251 | Method for measuring the thickness of a layer and apparatus for carrying out the method A method for measuring the thickness of a layer of pasty or dough-like material on a moving surface (5) wherein a movably supported measuring roll is contacted with the layer and wherein during the movement of the surface provided with the layer the defle... | 10/01/1996 |
| 5479720 | Methods and apparatus for measuring web thickness and other characteristics of a moving web A caliper measuring system is provided for determining the thickness of a moving sheet. The system comprises first and second caliper sensing heads having first and second sensing shoes positioned on opposite sides of the moving sheet for engaging the she... | 01/02/1996 |
| 5474289 | Sheet handling device A sheet handling device comprising a first roller (5) defining a reference surface which defines part of a sheet feed path along which sheets are fed, The roller (5) is mounted to a support (26) by arms (6) such that under normal working conditions the ro... | 12/12/1995 |
| 5457893 | Width measuring device for slab being discharged from slab casters Apparatus for continuously measuring the width of a continuously cast steel slab moving along a roller table including a pair of measuring rolls slidably mounted to a guide rail, one on each side of the slab, and further including an air cylinder intercon... | 10/17/1995 |
| 5392527 | Annulus measuring device Measuring device for quickly and accurately determining the thickness of an annulus between two cylindrical members, such as the catalyst retaining screens of a radial flow reactor, at any point along its length or circumference, comprises a wheeled cart ... | 02/28/1995 |
| 5388341 | Virtual two gauge profile system A method and system for measuring a profile of a strip of material produced in a reversing mill in which a direction of travel of the strip is reversible includes a single thickness gauge that measures the thickness of the strip and generates the thicknes... | 02/14/1995 |
| 5285684 | Shape detecting roll The present invention relates to a shape detecting roll rotatable for supporting a traveling rolled material over the width thereof to detect the pressure of the rolled material from portion to portion widthwise thereof and detect the shape of the rolled ... | 02/15/1994 |
| 5204537 | Thickness sensor comprising a leaf spring means, and a light sensor A typical printing device has a document feeder, a printer, and a document transport mechanism for transporting documents from the document feeder to the printer. In accordance with the invention, there is provided a thickness measurer which measures the ... | 04/20/1993 |
| 5161312 | Machine for monitoring the vertical position of a contact wire of an overhead line In a machine for monitoring the vertical position of a contact wire of an overhead line extending above a track, which comprises a self-propelled machine frame including a superstructure, an undercarriage supporting the machine frame on the track and havi... | 11/10/1992 |
| 5146690 | Scanning head A scanning head (12) for a surface measuring machine has a probe tip (30), which is supported by a probe tip support lever (18) so that it can be deflected perpendicularly to the reference surface (82). Incorporated between the probe tip (30) and a rigid ... | 09/15/1992 |
| 5074050 | Sheet-contacting thickness gauges A contacting thickness gauge comprising a unique surface follower (46). The bottom surface (56) of the surface follower (46) has both contacting areas (64,66) and non-contacting areas (62). The surface follower (46) is in substantially continuous contact ... | 12/24/1991 |
| 4813147 | Apparatus for interacting with both sides of a two-sided strip A thickness monitoring system for measuring the thickness of layer disposed on both sides of a two sided strip includes a thickness measuring device, a first set of guide rollers mounted to guide the strip past the thickness measuring device along a first... | 03/21/1989 |
| 4782294 | Method of measuring variation in the elongation of a very long magnetizable element of small transverse dimensions, and apparatus for implementing the method A method of measuring variation in the elongation of a very long element of small transverse dimensions and made of magnetizable material, optionally covered by non-magnetic material, and running between a lower elongation zone and a higher elongation zon... | 11/01/1988 |
| 4777729 | Thickness measuring apparatus for sheet material A thickness measuring apparatus for sheet material has before the actual measuring gap a pretest sensing element which responds to overthicknesses in the material under test transported to the apparatus and, if necessary, swivels the measuring system out ... | 10/18/1988 |
| 4741109 | Roller caliper gauge A roller caliper gauge for providing an accurate measurement of the thickness of a high speed web of paper or the like in which a proximity device located within a housing disposed between a pair of rollers on a head on one side of the web is responsive t... | 05/03/1988 |
| 4700486 | Measuring the thickness for a continuous material web An arrangement for measuring the thickness of a continuous material web. The thickness of the material web is measured by pressing from opposite sides of the web, and on the same spot, wheels which can rotate against the web. One wheel is equipped with a ... | 10/20/1987 |
| 4700368 | Method and apparatus for sensing sheets Apparatus for sensing the passage of sheets (1) through a nip formed by rollers (5 and 6), includes means for sensing the deflection of one roller relative to the other, the sensing means including an oscillator (18) providing a train of signals the frequ... | 10/13/1987 |
| 4693010 | Measuring equipment Apparatus for measuring the thickness of sheet material and especially for use in bank note counting machines. Two sensory elements have a measuring field, such as an electric, magnetic or ultrasonic field, maintained between them. The elements which are ... | 09/15/1987 |
| 4637144 | Apparatus for monitoring the diameters of crankpins during treatment in grinding machines The periphery of a selected crankpin is ground while the crankshaft rotates about an axis which is parallel to the axis of the crankpin. The decreasing diameter of the crankpin is monitored by one or more sensors which are connected with a detector servin... | 01/20/1987 |
| 4606130 | Apparatus for monitoring the diameters and axial positions of workpieces in machine tools A plain grinding machine wherein the gauges which are used to monitor the diameter and the axial position of a workpiece constitute a unitary apparatus with one or two first sensors which can be moved linearly at right angles to the axis of the workpiece ... | 08/19/1986 |
| 4574485 | Bore-insertable apparatus for stationary measurement of bore-width changes in geological formations A measuring device for long-term installation in a bore in a rock formation or detecting gradual changes in bore diameter, especially gradual constriction which might affect the condition of radioactive waste deposited in the bore, utilizes telescoping par... | 03/11/1986 |
